Blower.



H. E. PARSON.

BLOWER. APPLIoATIoHHLnn un. so. 190e. Bmmwnp 00T. 1e, 190s.

904,804. Patented Nov. 24, 190s.

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UNITED STAlES lrlgEN OFFXCE.

HENRY EDWIN PARSON, OF NEW YORK, N. Y.

BLOWER.

To all 'whom it may concern:

Be it known that I, HENRY Enwix PrinsoN, a citizen of the United States of America, and resident of New York, in the borough of Brooklyn, State of New York, have invented certain new and useful Improvements in Blowers, of which the following is a specification. A

My invention relates to a class of blowers which are familiar in the art and for which patents have heretofore been issued to me and which are generally known as Parson blowers. They consist in their essential details of a steam nozzle controlled by a suitable valve, the nozzle being so located as to act as an injector for a stream of air, this being preferably effected by placing the nozzle in a pipe so as to form a blower. The setting of the steam valve at a desired aperture so as to produce a desired steam pres sure in the blower and a desired admixture of air and steam is essential to the satisfactory operation of these blowers. The blowers when in use are entrusted to the care of comparatively ignorant men and it is desirable` that some method should be adopted which will insure exact setting of the steam valve and an impossibility' of its use unless set at the desired position. This l accomplish by providing a locking gage which controls the valve and which will permit the valve to be set and locked at the desired ap erture, and which, as soon as the valve is unlocked so as to increase the aperture. will put the blower out of action and notify the engineer in charge that 'the blower is not properly set.

Referring to the drawings wherein the same part is designated by the same reference numeral wherever it occurs and where in l show one form of my invention: Figure 1 is a practical section of my blower showing the same when the same is out of operation. Fig. 2 is a view similar to Fig. 1, showing the parts, however, properly ad justed and in position to operate.

l designates a steam pipe, 2 a steam nozzle, set at right angles to the steam pipe, having an opening 3 at its rear end which is externally threaded and having a small conical shaped opening 4 at its forward end.

5 is a spindle which at its forward end is eonieally shaped to conform to the inner opening il. At the rear end, the spindle is provided with a head 6 and 7 is a slot in Specification of Letters Patent.

Patented Nov. 24, 1908.

Serial No. L58,118.

the rear end of the head. The spindle is provided upon one side with a longitudinal groove S, the groove extending from a porl tion of the spindle within the steam pipe l. back beyond the end of the rear end 3 of the steam pipe 1.

\ 9 are a series of washers or distance pieces which are inserted between the rear end of the extension 3 and the head (i of the spindle. lhese washers form gages to determine the distance the conical end of the spindle shall enter the conical end t and thus control the amount of steam passing through the aperture. The smaller the number or size of gages t) the smaller will be the steam passage in the conical opening.

l0 is a cap which is internally screw threaded and provided at its back end with an opening 1l. This cap preferably is hexagonal or other shape. to adapt it to be read ily taken hold o'if by a wrench or other suitable instrument and is adapted to 'torce the head G of the spindle against. the washers or gages and cause them to make a steam tight joint with each other.

The desired pressure to be produced by the blower is determined by experiment by some one familiar with the operation of such nozzles, and a proper thickness or number of washers introduced between the nozzle and the head of the spindle which will under given conditions produce the best result. Then the proper have been placed in position to produce the proper aperture, the blower may be turned over to the care of an ,ignorant iireman with no other instriu-tions than to keep the cap l0 screwed up tight when in operation. 'if the cap is not screwed uptight against the gage, the steam will escape by passing through the groove S out between the washers into the chamber of the cap 10, then through the groove 7 in the head of the spindle and out through the opening 11 in the head of the cap. This will cause the blower to cease to operate 'for two reasons: iii-st, because sufficient steam pressure would not exist within the nozzle; and secondly, because the steam escaping from the rear end of the nozzle would flow in a l direction opposite the stream of steam from the nozzle and these two streams of steam flowing in the opposite direction would practically stop the operation of the blower. Such a condition would at once notify the iireman in charge that the caps of his blower were not screwed home and he would then screw them up solid against thei-r washers or gages and thus necessarily re-adjust the spindle to its best position for effective work.

It is to be understood that the invention herein described is applicable to any form of steam blower and that the construction of i the blower aside from the nozzle is not part of this invention, It will also be understood i that the gages are preferably made in the form of metal rings, but they may be oit any other desired construction.

Many modifications may be made in the form, construction and arrangement of parts without departing from my invention which consists of a nozzle carrying fluid under pressure with means for locking the valve in a desired position for eifective action and means for causing the nozzle to cease to operate when the valve is not in its desired position.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

l. In a steam blower, the combination of a steam nozzle, a valve controlling'the supply of steam to the blower, and means interposed between the steam nozzle and the valve to provide a seal for the former when the valve is in proper position, but acting' upon displacement of the valve to permit the escape of steam therethrough from the nozzle.

2. In a steam blower, the combination of a steam nozzle, a valve controlling the supply ot' iiuid to the nozzle, a by-pass from y the nozzle, and means in said by-pass sealing the same when the valve is in one position, but permitting the escape of steam therethrough when the valve is in another position.

3. In a nozzle supplying fluid, the combination of a valve controlling the supply of fluid, means for setting the valve in a desired position and means for automatically rendeling the operation of the blower ineffective upon displacement of the valve.

4L. ln a nozzle, the combination of a valve controlling the blast and means for setting the valve at a desired aperture, and means for automatically rendering the operation of the blower inei'lfective when the setting means is displaced.

ln a blower nozzle, means for putting the blower into operative condition, means for automatically rendering the blower noperative upon displacement of the first named means and. means for automatically indicating' such displacement.

6. In a blower nozzle, means for regulating the blast, means for setting' said regulating means, and means operating automatically upon displacement of said regulating means to divert to some extent the blast from the nozzle.

7. in a blower nozzle, means for regulating the blast, means for setting said regulating means and means operating upon displacement of said regulating means to cause the blast to automatically divide itself.

8. ln a blower nozzle, means for regulating the blast, means for setting said regulating means, means operating upon displacement oitI said regulating means to cause the blast by virtue of its own pressure to automatically render itself` inel'licient at the nozzle.

9. In a blower nozzle, a valve for regulating the blast, means for setting the valve at a desired aperture, said means having an outlet connected to the steam supply which is closed when the valve is set and opened when its setting is disturbed.

Signed by me at Birmingham, Ala., this 3rd day of November 1905.

HENRY EDVIN PARSON. llfitnesses Anci-IIE lVRrGHT, RUTH S. PATRICK. 

